Everything in the world can be graded, so is marriage. Based on the level of satisfaction of the person concerned, I have been reading the world for many years and introspection, and I think it can be divided into four grades: "acceptable, tolerable, tolerable, and intolerable." The first level of "desirable" marriage is satisfactory. Appearance, character, as well as education, talent, character, hobbies are "agreeable". But such "perfection" is not easy to meet. Some because found each othe...